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- O. E. MAOARTHY.

Oar Coupling. No. 242,666. Patented June 7,}1881.

|Z of l? a 1 1 7 a a e E J WITNESSES: INVENTOR:

' I ATTORNEYS.

N. PETERS, Fholo-Lilhngmphnr. Wmhingmn. EC.

UNITED STATES PATENT OFFICE.

OHARLESE. MAGARTHY, OF FORSYTH,-GEORGIA.

CAR-COUPLING.

SPECIFICATION forming partof Letters Patent No. 242,666, dated June 7,; 1881.

- Application filed April 20, 18L (No model.)

To all whom it may concern:

Beit known that I, CHARLES E. MACARTHY, of Forsyth, in the county of Monroe and State of Georgia, have invented a new and Improved Oar-Goupling; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being bad to the accompanying drawings, forming part of this specification, in which- Figurel is averticallongitudinal section with the coupling-pin sustained above the sliding block ready for automatic coupling. Fig. 2 is a similar view with the coupling-pin in working position and the link of the other car entered and caught. Fig. 3 is a horizontal section through the line 00 w of Fig. 2.

My invention relates to an improvement in automatic car-couplings, and it has reference to that class of such couplings in which a sliding block is arranged in the throat of the drawbar, and is pressed forward by a spring past the hole for the coupling-pin, and which block is made to hold up the coupling-pin until the said block is forced back from under the coupling-pin by the entering link of the opposite car, when the coupling drops through the link and couples the cars.

My improvement consists in making the coupling-pin without a head, and providing beneath the draw-bar a slide which holds the coupling-pin in its working position, but which when drawn back from beneath the coupling pin allows the latter to drop entirely through the draw-bar to uncouple the cars.

My invention also consists in the means for holding the coupling-pin down to its place, so that after the cars are coupled the-pin cannot be lifted out of its place, and the cars can only be uncoupled by dropping the pin through the draw-bar.

The invention also further consists in the peculiar construction and arrangement of the sliding block and draw-head for the automatic coupling of the cars, as will be hereinafter more fully described.

In the drawings, A A represent the top and bottom sections of the draw-bar, which is constructed with open sides and provided with a draw-head, B, having a tapering mouth. I

(J is a sliding block, which is made hollow, with an open front end and sides. This block slides between the top and bottom sections of the draw-bar, and has a rearwardly-projcctiu g stem, D, which passes through a guide-hole in a cross-piece extendin g from the top to thebot- 5 5 tom section of the draw-bar, and between which cross-piece and the rear side of the block 0 a spiral spring is arranged, whose tension serves to force the sliding block 0 past the couplingpin hole when the coupling-pin is raised, and the forward movement of which sliding block is limited by shoulders a a at the top and bottom of the mouth of the draw-head. In constructing the draw-head it is formed with converging tongues c c, that pass in through the 6 open sides of the sliding block and guide the entering link to the center of said block.

For coupling the cars automatically the tension of spring E is allowed to force the block 0 forward, so that itrests against the shoul- 7o ders a a in the top and bottom of the drawhead, and in which position the coupling pin is sustained upon the top of the said block, as

in Fig. 1; Now, when the draw-bar of the op posite car approaches, its link enters the mouth of the draw-head, and,striking block 0, causes it to recede against the tension of the spring, and as soon as it passes back of the couplingpin hole the coupling-pin falls through the link and couples the cars, as in Fig. 2.

lo constructing the coupling-pin it is formed without a head, and the hole in the draw-bar for the same goes entirely through. Now, to uncouple the cars,1 do not raise the couplingpin, as is usual, but allow it to drop entirely through the pin-hole in the draw-bar. For holding the pin in its working position the lower end of the coupling-pinhole is covered by a slide, G, beneath the draw-bar, upon which slide the coupling-pin is sustained as long as the cars are required to remain coupled. To uncouple the cars the slide G is moved back until it ceases to support the pin, and the latter then drops out, passing entirely through the coupling-pin hole in the draw-bar, and drop- 5 ping on the ground. This slide G is arranged in suitable guides beneath the draw-bar, and a stem, H, projects rearwardly from the same, and is connected to a cross-lever, I, by which it is worked. To hold this slide Gforward so :00 as to sustain the coupling-pin, a spiral spring, 0, is wound. about the stem H, and is made to hear at its front end against the slide G. For holding the coupling down after it is in its working position, a groove, 12, is formed around the pin near its lower end, and a spring-catch, d, is arranged in the slide G, so that when the pin dropsdown upon the latter the catch passes into the groove in the coupling-pin, andeffectnally prevents the same from accidentally rising or being pulled out.

Having thus described my invention, what I claim as new is- 1. A car-coupling consisting of a draw-bar. having a vertical hole entirely through the same, a coupling-pin made Without a retaininghead, and a slide arranged beneath the drawbar and adapted to cover the coupling-pin hole and sustain the coupling-pin or be retracted therefrom toallow the coupling-pin to drop through, substantially as described.

2. The combination, with a draw-bar having a hole through the same, of a coupling-pin having a groove around the same, and a slide, G, arranged to sustain the coupling-pin when in a working position, and provided with a springcatoh adapted to engage with the groove of 25 the coupling-pin to prevent the latter from beinguncoupled by a rising movement, as. de-

scribed.

3. The combination, with the draw-head having shoulders at a and tapering tongues c c, of 30 aspring-seated sliding block, 0, having open sidesadapted to receive the tongues c 0, substantially as and for the purpose described.

4. A coupling-pin for a draw-bar having uniform transverse dimensions and a transverse 5 groove in its lower end, as described.

0. E. MAGARTHY.

Witnesses:

EDWD, W. BYRN, SoLoN O. KEMoN. 

